Finding the Fourth Proportional to 121,945.92, 168,283.80 and 68,230.68
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Solution
The fourth proportional to 121,945.92, 168,283.80 and 68,230.68 is: 94,157.46
Step by Step Solution
- Step 1: Write the proportion equation
121,945.92 : 168,283.80 = 68,230.68 : x - Step 2: Convert to fraction form
121,945.92/168,283.80 = 68,230.68/x - Step 3: Cross multiply
121,945.92x = 168,283.80 × 68,230.68 - Step 4: Simplify right side
121,945.92x = 11,482,118,106.98 - Step 5: Solve for x
x = 11,482,118,106.98/121,945.92 - Step 6: Final answer
x = 94,157.46
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.